LOW
CVE-2026-45459
CWE-693Published: June 9, 2026· Updated: Jun 11, 2026
3.3
CVSS v3.1
EPSS:0.06%probability of exploitation in 30 daysPercentile:18.0th
Official Description
Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
Technical Analysis
CVE-2026-45459 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Affected Vendors & Products
Microsoft4 products
365 appsmicrosoft 365office 2021office 2024
Source: NVD CPE · 4 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
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PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories
All References (1)
Quick Facts
CVE IDCVE-2026-45459
CVSS Score3.3 / 10
SeverityLOW
WeaknessCWE-693
CISA KEVNo
EPSS (30d)0.06%
Affected1 vendor
PublishedJun 9, 2026
Related CVEs (CWE-693)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-45459 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.